Ok guys The sdc2.5 I have now is loud but not enough. I designed a box today in sketchup that would be forward firing and sealed off with two havoc 12s on a soundqubed 2200d. Box is 6.12 Gross 5.16 Net tuned to 34.92hz with 2 6 inch aeros that are 18 inches long each. This gives me 10.95 per foot of port. WIll this work well?